Method of making barrels and casks



Dec. 4 1923.

E. A. BOLINDER METHOD OF MAKING BARRELS AND CASKS Eiled. .June 25 1920 I10 vent/o1 l'Zfl .130 Liza/deli ERIK AUGUST BOLINDER,

air

or STOCKHOLM, SWEDEN.

iun'rnon or MAKING Bananas Ann CASKSI Application filed June 25,

To all whom it may concern:

Be it known that I, ERIK 'AUGUST Bo- LINDER, subject of the King of Sweden residing at :Jaktvarvsgrand *4, Stockholm, Sweden, have invented certain new and useful Improvements in Methods of Making Barrels and Casks, of which the following is a s ecification; I

siis well'known in'the art of making barrelsand casks, great difficulty has been; occasioned in producing absolutely tight joints between the staves of the barrels, even if the casks were hooped very tight. Many endeavours have been made to improve on the methods; among them also grooving of the cask staves hasbeen attempted. In bulging barrels, h'owever, it has been'necessary to confine the art to the use of acommon' rec-- tangular or wedge-shaped groove and tongue joint, producing a comparatively tight engagement between the staves, it is true, but not capable of preventing the staves from being disjointed. Thus there would still remain the possibility of leaks occurring between the staves. I

The present inventionhas for its purpose to facilitate the :employment'ofa so-called dove-tailed or similar "tongue in making bulging barrels. The said kind of tongue possesses all qualifications for giving the desired result as regards tightness and durability, the same holding the staves securely together so as to prevent them from parting in a crosswise direction. The reason for not heretofore using such a tongue and groove in the ordinary bulging barrels, that is to say in barrels having their largest width at the middle and contracting toward the end portions thereof, is thatno method could be devised for sliding the staves having different widths at the middle and the end portions thereof into engagement with each other. This difiiculty'has been removed by the present invention which thus makes it possible to produce barrels and casks of the ordinary bulging shape from staves with dove-tailed or similarly shaped tongues. Such barrels have many important advantages over others, one advantage being that they are easier to handle, and by the invention they are also rendered very strong, which is particularly desirable in cases where they are intended for long transportations of costly liquids.

The invention is primarily characterized by this that the staves provided with dove 1920. Serial a... 391,72

tailed or similarly shaped tongues "and grooves are slid onto each other after first shaping them or their tongue or groove so 1 that they w1ll extend longitudinally along a curvature adapted to such assembly of the staves, for instance a circular arc. the principal feature of, the invention, the

latter, however, being further characterized by thls that the edges of two adjacent staves adapted tobe slid onto each other are located in a plane extending through the longitudinal axis of the barrel or the cask, or laterally of such axis. I

The method is illustrated in the, accompanying drawing, in which,

Fig. 1 shows two ofthe staves of the barrel, such stave being broadest at the middle and contracting toward the endportions thereof. v I a Fig. 2 shows one stave, in any edge-view, and Fig. 3 the same in cross section. Fig. 4 shows to an enlarged scale the shape of the tongue as mostly used, or the so called dovetailed tongue. Fig. 5 illustrates the way of sliding two such staves together upon their havingbeen shaped after circular arcs with the same radius of curvature. Figs. 6'and 7 show a readyassembled barrel in elevation.-

In making the wall of the barrel, staves are used of a shape according to Fig. 1, the two longitudinal edges of each stave running to v This is 1 along continuous curves. The difference of width at the middle of the stave and at the ends thereof is of course dependent on the more or less pronounced bilge of the barrel. The staves may be either somewhat arched in a crosswise direction in accordance with the circumference of the barrel which is generally of a circular shape, or they may be ing is dove-tailed, but it is evident that any we v other profile preventing the engagement or the pulling apart of the staves laterally may be employed. On the inside, near the ends,

the staves are provided with crozes 4 receiv ing the edges ofthe barrel heads. The

crozes may be made before or after the staves are put together.

The staves formed according to Fig. i 1

cannot he slid onto each other as long as they 7 are fiat. To facilitate'the sliding together of'the staves they are therefore shaped ac cording tothe invention so that they or their tongues orgroovesrun 1n the longitudinal direction along a circular arc according to the Figures 2 and 5, both: staves having the sameradins ofcury'atnre. "-If the stares are. p of a flexible sort of Wood, it is not necessary 15' V from" the beginning, but they may then be 1 given this shape approximately, after which.

that they be shaped exactly on a circ-nlar are when sliding the staves together, they will assume the proper form. The staves or the tongued edges thereof must be further made so'that the edgesto be s lid together, and which are indicated for instance by the curved line A-B in F ig. 6, Will be located in one and the same plane'A- B (Fig. 7)

when the tongue of one stave is introduced into the groove, of the adjacent stave. The

V said plane A--B forms an angle With the surface of the staves next to the edge. As a rule this angle is selected so that it will be a right one so as to causethe plane A -B'to coincide with theplane extending throu h the joint" between the two staves and t e longitudinal airisof the barrel. However,

the angle selected may be smaller so that the plane will be located on one side of the longitudinal axis of the barrel or per-n axis.

chaps, will form a small angle with this may be shaped first and third stave, a fourth one. and so on may be joined thereto, iintil the Whole shell of the barrel is nearly ready aiid only a'narrow.

space reihains between the fi eeedge's of the two oiiterinost eta-yes, such space being then filled in a special inanner.

What I claim as new and desire tofsecure by Letters Patent of the United States is V A method of making barrels andcasks having a larger circumference at. the middle than at the tWO fid pOr tiOn S consisting in,

eiiipleying longitudiiiallyiciirvedlstates and shaping the longitudinal edges thereofiii-i:

the form of'a circular arc, then foririingkthe edges with I interlc'icking tongues and gr otes and finally inserting" the tongues near the end of onetaveinengagememzwith the groove at the op osite end of, "the adjacent stave and sliding the stayes loiigitudinally.

Inent thereof. 7 v p e In testimony whereof Ieffix my signature presence of two Witnesses. I

ERIK AUGUST 7 Witnesses: L i A D ma te; i

L'mz iso'e Miiomitfi of each other to ifect interlocking en age- BOLINEERQ 

